Wrench.



PATENTBD MAR. 27, 1906.

' S. E. COFFMAN.

WRENCH.

APPLICATION FILED JAN.19, 1905.

2 SHEETS-SHEET 1.

No. 816,151. PATENTED MAR. 27, 1906.

4 s. E. 00FFMAN.

WRENCH} APPLICATION FILED JAN. 19, 1905.

2 SHEBTfl-SHEET 2.

' dev1ce may be app UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented March 27, 1906,

, Application filed January 19, 1905. Serial No. 241,833.

To otZZ whom it mdy concern:

Be it' known that I, SEBURN E. COFFMAN, a citizen of the United States,residing at Bagwell,in the county of Red River, State of Texas, haveinvented certain new and useful Improvements in Wrenches ,and I dohereby ate the use of link connections and yet obtain a positive bindingaction of the j aws upon the pipe, bolt, or rlithfr object to which theA still further object of the invention is to provide a wrench whereinboth jaws will be movable with relation one to the other and operatedthrough the instrumentality of a single lever, both jaws terminatingshort of the rear end of the levernr handle. I

With these and other objects in view the present invention consists inthe combination and arrangement of parts, as will be hereinafter morefully described, shown in the accompanying drawings, and particularlypointed out in the appended claim, it being understood that changes inthe form, proportion, size, and minor details may be made within thescope of the claim without departing from the spirit or sacrificing anyof the advantages of the present invention.

In the drawings, Figure 1 is a side .eleva-- tion of the improved wrenchengaged with a pipe, a portion of the wrench being broken away. Fig. 2is a side elevation showing the wrench in closed position. Fig. 3 is anedge view. 1 Fig. 4 is a section on line 4 4 of Fig. 1: Fig. 5 is asectionon line 5 5 of Fig. -1.

Referring nowv more specifically to the accompanying drawings, thereference character 1 designates a handle,-having its inner end 2 curvedupwardly, with its extremity reduced longitudinally and transversely, as'at 3, the upper and lower surfaces of the handle, by reason of theaforesaid curve and reduced extremity, resulting in the u per and lowercam surfaces 4 and 4?, as clearly shown in the drawings. An upper jaw 5,having its forward end curved downwardly and provided with teeth 6, hasits rear end directed slightly upwardly, as at 7, and bifurcated, as

shown. The bifurcation just alluded to results in spaced ears 8, whichare provided with alining perforations 9, designed to receive thepivot-pin, rivet, or the like 10., which also pierces a erforation inthe reduced inner end ofthe andle. It will thus be understood that theupper awis pivotally connected to the reduced inner end of the handle.Depending from the upper jaw is a lug '11, having a-perforation 12 inits lower end. This lug is preferably formedv integrally with the upperjaw and depends from the under face centrally thereof. The lower jaw ofthe wrench is of a very peculiar form, the outer end 13 thereof beingturned downwardly with respect to the portion 14 thereof, the

upper face of said turned-down portion being provided with a series ofteeth 15. This lower jaw has an opening 16 formed through the upper andlower faces thereof, and directly in the rear of the said opening thejaw is again turned downwardly 111 reduced form,

as at 1'6, and is curved upwardly at its rear end, as at 17, in a planesubstantially at a right angle to the plane of the aforesaid portion 14.The curved or turned-up portion 17 of the lower jaw is enlarged, asshown, and provided with an eye or opening 18, in which the handle 1 ofthe wrench is slidably fitted. It shouldbe noted that the said openingor the like 18 is preferably of rectangular form and is of suchdimensions with respect to the handle as to permit easy sliding orsidewise movement of the handle therein. The upper wall P of' the saidopening is inclined downward from rear to front, while the lower wall 0the opening is inclined downwardly in a direction opposite to thedirection of inclinatioi of the upper wall. By reason of suchinclination of the upper and lower walls of the, said eye, opening, orthe like it will be seen that when the wrench is manipulated to grip apipe, as illustrated in Fig. 1, the broadened portion of the handlerests upon the forward edge of the lower face of the eye 18,

' which latter acts as a fulcrum, and when the jaws are thrown apart thecorresponding edge of the upper face acts as a fulcrum for the handle.

When the rear .portion of the lower jaw slides upon the handle in theact of opening the wrench, the pivot-pin 1 2 piercing the sides thereofand the aforesaid depending lug 11, causes both jaws to spread apart attheir forward ends.

It will thus be understood that in operation it is simply necessary totilt the handle 1 rearwardly, when the jaws will be spread apart. Thenby placing the pipe, bolt, or the like between the jaws and pressingdownwardly upon the handle the pipe or the like is clamped firmlytherebetween for operation,

as well understood.

I claim A pipe-wrench comprising a aw having its rear end bifurcated, asecond jaw provided with a slot, a lug formed integral with saidfirst-named jaw and projecting from the lower face thereof, said lugbeing pivotally engaged in said slot, said second jaw having its rearend beyond the slot curved down- SEBURN E. COFFMAN. l/Vitnesses:

W. H. LOVE, S. W. LOVE.

